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Paper 2009/096
A note on the security of MST3
M.I. Gonzalez Vasco and A. L. Perez del Pozo and P. Taborda Duarte
Abstract
In this paper, we study the recently proposed encryption scheme MST3, focusing on a concrete instantiation using Suzuki-2-groups. In a passive scenario, we argue that the one wayness of this scheme may not, as claimed, be proven without the assumption that factoring group elements with respect to random covers for a subset of the group is hard. As a result, we conclude that for the proposed Suzuki 2-groups instantiation, impractical key sizes should be used in order to prevent more or less straightforward factorization attacks.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- cryptanalysisgroup factorizationscoversSuzuki 2-groups
- Contact author(s)
- angel perez @ urjc es
- History
- 2009-03-02: received
- Short URL
- https://ia.cr/2009/096
- License
-
CC BY